Сводка
The AviationChartInfo object provides access to properties of the product library area of interest (AOI). This object is returned from the GetAviationAOI function. It is an object that contains the information for the map ID, reference scale, spatial reference, rotation angle, geometry, and extraction query properties.
Описание
The object is produced by running the GetAviationAOI function and is used by other tools. Once this information is retrieved by other tools, you can view specific details about an AOI feature, such as the map ID, reference scale, rotation angle, geometry, and extraction query. For instance, you can view the spatial reference and rotation angles for all the AOIs in the product library to ensure they are all consistent across products.
Синтаксис
AviationChartInfo (product_library, map_id)
| Параметр | Объяснение | Тип данных |
product_library | The path to a connection file or the database used as the product library workspace. | String |
map_id | The path to the area of interest in the product library. The path information is formatted as Solution Name::Product Class Name::Series Name::Product Name::Instance Name::AOI Name. | String |
Свойства
| Владение | Объяснение | Тип данных |
| extractionQuery (только чтение) | Returns the SQL statement where clause that allows you to determine which features are extracted into areas of interest that are going to be included in your products. | Dictionary |
| spatialReference (только чтение) | Returns the spatial reference of the AOI's primary coordinate system. | SpatialReference |
| aoiGeometry (только чтение) | Returns the geometry that represents the area of the map. | Geometry |
| geographicExtent (чтение и запись) | Returns a True or False Boolean that states whether the AOI is using the geographic extent. | Boolean |
| mapid (чтение и запись) | Returns the path to the area of interest in the product library. The path information is formatted as Solution Name::Product Class Name::Series Name::Product Name::Instance Name::AOI Name. | String |
| rotationAngle (чтение и запись) | Returns the value of the angle of rotation for the AOI. | Double |
| referenceScale (чтение и запись) | Returns the denominator of the scale fraction corresponding to the intended display scale of input data. | Double |
Пример кода
AviationChartInfo example
This sample retrieves information about a map's AOI and prints it.
# Name: AviationChartInfoSample.py
# Description: Retrieves information about a map's AOI and prints it
# Author: Esri
# Date: March 2015
# Import arcpyproduction and aviation modules
import arcpy
import arcpyproduction
# Check out Aviation license
arcpy.CheckOutExtension("Aeronautical")
# Set variables
product_library = "c:/data/FAA_PL.sde"
map_id = "Aeronautical::IFR_Enroute::AK High::AK H-2::AK H-2::AK H-2 AOI"
# Get map IDs
aoi = arcpyproduction.aviation.charting.AviationChartInfo(product_library,map_id)
# Print map ID, reference scale, and rotation angle
print("MapId: {}\n Reference Scale: {}\n Rotation Angle: {}\n".format(aoi.mapid, aoi.referenceScale, aoi.rotationAngle))
# Check in Aviation license
arcpy.CheckInExtension("Aeronautical")